#ffmpeg-devel on 2024-10-05 — irc logs at libera.irclog.whitequark.org

2024-09-30 09:44 michaelni changed the topic of #ffmpeg-devel to: Welcome to the FFmpeg development channel | Questions about using FFmpeg or developing with libav* libs should be asked in #ffmpeg | This channel is publicly logged | FFmpeg 7.1 has been released! | Please read ffmpeg.org/developer.html#Code-of-conduct

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13:53 <haasn> yuv420p -> rgb24: speedup 637.54%

13:53 <haasn> wow what

13:53 <haasn> (new swscale vs old swscale)

13:53 <haasn> how is that even possible

13:54 <JEEB> if not somehow broken, noice

13:55 <haasn> it matches CRC

13:56 <haasn> yuv420p -> rgb24: speedup -2.10%

13:56 <haasn> with threading disabled

13:56 <haasn> so it's all from the new threading design

13:58 <haasn> still, that's a pretty amazing preliminary result

13:59 <haasn> yuv420p -> rgb24: speedup 998.08% with -threads 32 (normally it caps at 16)

14:00 <haasn> let me find out exactly what's happening

14:08 <haasn> ah, I was using the old API incorrectly in a subtle way that prevented it from threading

14:08 <haasn> still, I'll take that as a result in favor of the new API

14:09 <haasn> specifically, sws_getContext disables threading because the context has already been initialized by that point..

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14:29 <haasn> okay now the speedup is gone :(

14:29 <haasn> but at least it's not slower

14:32 <haasn> xyz12le -> yuv420p: speedup 6.318x

14:32 <haasn> ah, as expected, cases involving cascaded contexts got a massive speedup

14:32 <haasn> because the new design splits those into multiple passes which can be independently threaded

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14:49 <cone-268> ffmpeg Gyan Doshi master:099f88b8641d: avcodec/libx265: unbreak build for X265_BUILD >= 213

14:50 <cone-268> ffmpeg Gyan Doshi release/7.1:63f5c007a7da: avcodec/libx265: unbreak build for X265_BUILD >= 213

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17:38 <cone-268> ffmpeg James Almer master:32e34692fb77: avcodec/hevc/ps: print the correct unsupported scalability value found

17:38 <cone-268> ffmpeg James Almer master:4a098eabf959: avcodec/hevc/ps: print a more accurate message when parsing an SPS for an unsupported layer

17:38 <cone-268> ffmpeg James Almer master:cdda4c4d50d0: avcodec/packet: fix doxy references in AVPacketSideData

17:38 <cone-268> ffmpeg James Almer master:d5eb0e7fb334: avformat/mov: split off heif item initialization to its own function

17:38 <cone-268> ffmpeg James Almer master:e907bf677a6b: avformat/mov: split off lcevc stream group initialization to its own function

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21:08 <cone-985> ffmpeg James Almer master:57d7ba4c4fe3: avcodec/aac/aacdec: add a missing wrapper to an AAC USAC function call

21:09 <Lynne> ^thanks

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23:35 <cone-985> ffmpeg Lynne master:4c88186d5d89: lavfi/vulkan: remove redundant header

23:35 <cone-985> ffmpeg Lynne master:fcd1cdcb7b74: lavc/vulkan: remove redundant header

23:35 <cone-985> ffmpeg Lynne master:0a1f8107bb78: vulkan: move SPIR-V compilation code to libavutil

23:35 <cone-985> ffmpeg Lynne master:893f3fde4cde: lavc/vulkan: add SPIR-V compilation support

23:35 <cone-985> ffmpeg Lynne master:4a557baaa1fa: vulkan_encode: do not align DPB buffer size

23:35 <cone-985> ffmpeg Lynne master:6756136c92b8: libavfilter/Makefile: fix tag for Vulkan .comp files

23:35 <cone-985> ffmpeg Lynne master:e3d3ee516a72: bwdif_vulkan: split off main shader code as a separate file

23:35 <cone-985> ffmpeg Lynne master:73d2cb1c2b2e: nlmeans_vulkan: remove unused forward declaration

23:35 <cone-985> ffmpeg Lynne master:2f888fb99eef: configure: drop yasm support

23:35 <cone-985> ffmpeg Lynne master:b890482d052d: Revert "x86/tx_float: change a condition in a preprocessor check"

23:35 <cone-985> ffmpeg Lynne master:bf643f989bea: Revert "x86/tx_float: add missing preprocessor wrapper for AVX2 functions"

23:35 <cone-985> ffmpeg Lynne master:24c5a58e55f2: Revert "x86/tx_float: add missing check for AVX2"

23:35 <cone-985> ffmpeg Lynne master:b17a240c8d72: Revert "x86/tx_float: set all operands for shufps"

23:35 <cone-985> ffmpeg Lynne master:892f64ad9bce: x86/tx_float: remove HAVE_AVX2_EXTERNAL checks

23:35 <cone-985> ffmpeg Lynne master:969c271a5a7b: x86/lpc: remove HAVE_AVX2_EXTERNAL checks

23:35 <cone-985> ffmpeg IndecisiveTurtle master:d80676117a80: libavutil/vulkan: Prevent crash on shaders with no descriptors

23:35 <cone-985> ffmpeg IndecisiveTurtle master:f456522e32ec: avcodec/vulkan: Add support for generating GLSL strings from comp shaders

23:37 <Lynne> gentlemen!

23:37 <Lynne> I declare open season on HAVE_AVX2_EXTERNAL checks!

23:50 <jamrial> is it confirmed the oldest nasm version we support has avx2?